T.  Becker, ?Cyclorrhapha Schizophora: Holometopa?, in Katalog der paläarktischen Dipteren, vol. 4, T.  Becker, Bezzi, M., Kertész, K., and Stein, P., Eds. Budapest: , 1905, pp. 1-273.

J. E.  Collin, ?Results of the Armstrong College Expedition to Siwa Oasis (Libyan Desert), 1935, under the leadership of Prof. J. Omer-Cooper. Diptera Empididae, Dolichopodidae, Aschiza and Acalypterae?, Bulletin de la Société Fouad 1er d'entomologie, vol. 33, pp. 175-225, 13 figs., 1949.